Definition of drift ice in English:

noun

This choice allowed us to travel comfortably with the wind at our backs while viewing the constant vista of mountains and valleys, the ice-speckled Atlantic Ocean in the distance dotted with floes of drift ice from Quebec and Labrador.

Belhadan's location as the northernmost ice-free port of the Empire helped explain its importance, but it wasn't so far south that drift ice or icebergs were unheard of.

The boat transport of supplies back to the station rarely lacked dangerous moments from encounters with fast-moving drift ice and walruses.